(docs) Remove note about ssh_authorized_key resources not being purgable
(docs) Remove note about ssh_authorized_key resources not being purgable

Since you can actually purge those now.

puppetlabs/puppetdb,wkalt/puppetdb,senior/puppetdb,rbrw/puppetdb,rbrw/puppetdb,grimradical/puppetdb,kbarber/puppetdb,wkalt/puppetdb,kbarber/puppetdb,waynr/puppetdb,senior/puppetdb,waynr/puppetdb,waynr/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,mullr/puppetdb,grimradical/puppetdb,grimradical/puppetdb,mullr/puppetdb,kbrezina/puppetdb,kbrezina/puppetdb,waynr/puppetdb,kbarber/puppetdb,rbrw/puppetdb,mullr/puppetdb,mullr/puppetdb,kbrezina/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,kbarber/puppetdb,senior/puppetdb,senior/puppetdb,kbrezina/puppetdb,grimradical/puppetdb,wkalt/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,wkalt/puppetdb